Frank moore



(No Model.)

F. MOORE. VALVE FOR FLUID PRESSURE SIGNALING APPARATUS.

No. 453,604. Patented June 2,1891.

WITNESSES: INVENTOR,

ITED STATES PATENT OFFICE.

FRANK MOORE, OF PI'lTSllURG, PENNSYL 'ANIA, ASSIGNOR TO THE IV- INGHOUSEAIR BRAKE COMPANY, OF SAME PLACE.

VALVE FOR FLUID-PRESSURE SIGNALING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 453,604, dated June 2,1891.

Application filed August 12, 1890. Serial No. 361,793' (No model.)

To all whom it may concern/.-

Beit known that I, FRANK MOORE, a cit izen of the United States,residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented or discovered certain new and usefulImprovements in Valves for Fluid-Pressure Signaling Apparatus, of whichimprovement the following is a specification.

My present invention relates to and is an improvement upon apparatus forsignaling byfluid-pressure of the type set forth in Letters Patent ofthe United States No. 435,783, granted and issued to The Vest inghonseAir Brake Company, of Pittsburg, Pennsylvania, as assignee of Thomas \V.\Velsh, Francis L. Ulark, and myself, under date of Septemher, 2, 1890,and its object is to further improve said apparatus by obviating theliability of thetlischarge-valve to be moved from its seat and undesiredand improper signalindieations to be thereby given by the jolting andjarring of a car in passing over low joints or other defective portionsof the track.

To this end my invention, generally stated, consists in the combination,with a casing having fluid-pressure supply and discharge passages, and amovable abutment working therein, of a discharge-valvc connected to themovable abutment and having a face adapted to fit closclvwithin thedischargepassage during the seating periods of the valve.

The improvcinent claimed is hereinafter fully set forth.

The accompanying drawing is a vertical central section through asignaling-valvc mechanism embodying my invention.

The apparatus in which my improvement is herein exemplified is in itsgeneral features of construction and operation similar to that ofLetters Patent No. 435,783 aforesaid, and need not, therefm'c, saving asto the invention herein claimed, be again fully and atlength described.As in said application, the chamber or casing 1 is closed at top by acap 2 and is divided by a movable abutment 5 into an upper compartment 6and a lower compartment '7, of substantially larger volume. Asignaling-pipe connection or nozzle 8, for attachment to apressurte-supplying line, communicates by a small supplypassage 9 withthe compartment (hand a passage 10 leads from said compartment to avalve chamber ll below the compartment 7, from which chamber adischarge-passage 12 leads into a discharge nozzle or connection 13,adapted to be attached to a pipe loading to a signal-indicating device.The dischargepassage 12 is controlled by a discharge-valve 14: uponthelower end of a stem 15, secured to the abutment 5 and provided withlateral grooves or channels 17 for thepassageof fluid from thecompartment 7 to the valve-chamber and discharge-passage when theabutment and discharge-valve are raised by reduction of pressure in thesupply-line.

' In Letters Patent No. 35,783 aforesaid the discharge-valve 1+ is inthe form of a flatfacc upon thelower end of the stem 15 of the abutmentand seats on a corresponding facc around the upper end of thedischarge-pas sage 12. Under such (OllStl'LUi'lOll any upward movement,however slight, of the abutment coincidcntly separates the faces of thevalve and seat and effects a discharge of fluid through the passage 12to the signal-indicating device. Such separation of the dischargevalveand seat may in railroad service he accidentally effected by the joltingor jarring of the car resultant upon passing over low joints or otherimperfections and inequalities in the track, and a signal-indication bethereby improperly given,or a frequent repetition of faint or imperfectindicat ions maybe made with annoying and disturbing effect upon theengineer.

In order to effectually obviate the above objection, I provide upon thelower end of the abutment-stem a discharge-valve 14E, having,preferably, as in the patent aforesaid, a flat face adapted to seat upona corresponding face surrounding the upper end of the discharge-passageiiand provided with a cylindrical facc formed upon a central pro jectionextending a short distance into and fitting accurately in thedischarge-passage, which passage will not, therefore, be opened to thevalve-chamber 11 until the valve has been raised snfiiciently far tocompletely withdraw its projection from the dischargepassage. Suchlimited upward movement of the valve as might be due to jarring orjolting of the car, as before referred to, would No. 435,783, beforereferred to.

not, by reason of the provision of the projecv tion, be sufiicient topermit the escape of fluid into the discharge-passage, and wouldtherefore have no obj ectionablc effect, Whileon the other hand thenormal operation of the valve in eifecting. discharge, when required, isin nowise impaired or limited.

A valvular appliance having a casing provided with fluid pressure anddischarge pipes, a movable abutment, and a fiat valve connected to theabutment and controlling communication between the supply and dischargepipes is set forth in Letters Patent Such construction I thereforedistinctly disclaim as of my present invention.

I claim as my invention and desire to se cure by Letters Patent Thecombination of a valve-casing, a fluidpressure-supply pipe openingdirectly thereinto, a movable abutment fitted to Work in the casing andnormally subject to equilibas may be due to shocks or jars and effectingthe opening of the passage only in and by normal movement of theabutment due to variation of fluid-pressure on opposite sides thereof,substantially as set forth.

In testimony whereof I have hereunto set my hand.

FRANK Moons.

\Vitnesses:

J. SNOWD N'BEL R. H. WHi'rTLEsEY.

